81216837

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{349}}^1$

素因数の和:404

約数の個数: 60

約数和(自身を含む): 139500900

約数和(自身を除く): 58284063

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 169, 221, 349, 351, 459, 507, 663, 1047, 1053, 1377, 1521, 1989, 2873, 3141, 4537, 4563, 5933, 5967, 8619, 9423, 13611, 13689, 17799, 17901, 25857, 28269, 40833, 53397, 58981, 77129, 77571, 122499, 160191, 176943, 231387, 232713, 367497, 480573, 530829, 694161, 1002677, 1592487, 2082483, 3008031, 4777461, 6247449, 9024093, 27072279, 81216837]

約数ペア:

[(1, 81216837), (3, 27072279), (9, 9024093), (13, 6247449), (17, 4777461), (27, 3008031), (39, 2082483), (51, 1592487), (81, 1002677), (117, 694161), (153, 530829), (169, 480573), (221, 367497), (349, 232713), (351, 231387), (459, 176943), (507, 160191), (663, 122499), (1047, 77571), (1053, 77129), (1377, 58981), (1521, 53397), (1989, 40833), (2873, 28269), (3141, 25857), (4537, 17901), (4563, 17799), (5933, 13689), (5967, 13611), (8619, 9423)]